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Title:
STATE MONITORING SYSTEM AND STATE MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/112504
Kind Code:
A1
Abstract:
Provided are a state monitoring system and a state monitoring method that make it possible to detect an AE wave with high accuracy. In the present invention, an (acoustic emission) AE wave extraction circuit 55 extracts, from a sensing signal SS from an acoustic sensor 23, an AE wave AEW the generation source of which is a molded body which is a three-dimensional additive manufacturing molded-object. An AE wave analysis circuit 56 analyzes the AE wave AEW extracted by the AE wave extraction circuit 55. Here, the AE wave extraction circuit 55 comprises a noise blocking circuit that uses a band-stop filter to block a first disturbance noise that has arisen within the frequency band of the AE wave AEW.

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Inventors:
OTSU KENJI (JP)
KOSEKI SHUHO (JP)
OKAMOTO SHINYA (JP)
YAMADA YUTA (JP)
Application Number:
PCT/JP2022/039977
Publication Date:
June 22, 2023
Filing Date:
October 26, 2022
Export Citation:
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Assignee:
PROTERIAL LTD (JP)
International Classes:
G01N29/14; B33Y10/00; B33Y30/00; B33Y50/02; G01N29/04; G01N29/44
Domestic Patent References:
WO2019230962A12019-12-05
Foreign References:
JP2018523011A2018-08-16
JP2017094728A2017-06-01
JP2021076533A2021-05-20
JPS5485784A1979-07-07
JP2013033726A2013-02-14
US20210245250A12021-08-12
JP2017094728A2017-06-01
Attorney, Agent or Firm:
Tsutsui & Associates (JP)
Download PDF:
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